#include<stdio.h>
char* mystrcpy(char* arr2,char* arr1)
{
    char *arr3=arr2;
    while((*arr2++ = *arr1++)!='\0');
    return arr3;

}
int main()
{
    char arr1[20]="abc";
    char arr2[20];
    char* arr3=mystrcpy(arr2,arr1);
    char* arr4=mystrcpy(arr3,arr1);
    printf("%s",arr4);
    return 0;

}